可数名词：

1.姊妹，姐妹，姐，妹

2.女会员，修女

及物动词：姐妹般对待

英语解释

a female person who has the same parents as another person

(slang) sometimes used as a term of address for attractive young women

a female person who is a fellow member of a sorority or labor union or other group

(Roman Catholic Church) a title given to a nun (and used as a form of address)